MULTICRITICAL PHASE-DIAGRAM AND RANDOM FIELD EFFECTS IN SUPERCONDUCTING BISMUTHATES

被引：19

作者：

AHARONY, A

AUERBACH, A

机构：

[1] BOSTON UNIV, DEPT PHYS, BOSTON, MA 02215 USA

[2] TECHNION ISRAEL INST TECHNOL, DEPT PHYS, IL-32000 HAIFA, ISRAEL

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.70.1874

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The temperature-concentration phase diagram of doped bismuthate superconductors is described using a coarse grained anisotropic Heisenberg model. In contrast to previous treatments, we find a robust region of coexistence between the charge density wave (CDW) and the superconducting phases. Random fields break the CDW phase into metastable domains, which may explain various recent experiments. A partial Meissner effect without bulk superconductivity is predicted at low doping concentrations and at low temperatures.

引用

页码：1874 / 1877

页数：4

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